Jump to content

Recommended Posts

Posted · syringe extruder for umo+

i need a simple design to make for my umo+ .i have seen a lot .but all are mounted to the original extruder .

my umo+ has e3d hot end not like the original one 

so i need a bowden  design to fit on it 

i need to know how does it work ?

are there any modification that has to be made ?

  • Link to post
    Share on other sites

    Posted · syringe extruder for umo+

    It should be mentioned in the files there. Basically you have to reverse the feeding (you can do this in the gcode by replacing all E values by -E, reverse some wires on your stepper motor or mount it the other way around), so the filament will pull instead of push. The pulling motion will pull down the top of the syringe, like how you would squeeze the contents out of it if you would do it manually.

    Something like retraction is not possible. 

  • Link to post
    Share on other sites

    Posted · syringe extruder for umo+

    In biomedical sciences people often use peristaltic pumps to transport liquids and thin pastes (=with a consistency similar to sirup, honey, yoghurt). For example to inject dead bodies with formol or other preservatives. But this will not work for thick pastes like choco, butter, thick glue, thick silicone. It all depends on the materials you want to extrude, and on the way they are delivered to you. If in bulk or in plastic bags like blood and water in hospitals then it should work. If in standard industrial silicone or glue syringes it will be very difficult.

     

    If you are willing to do a bit of development, I think such a peristaltic pump concept might work for 3D-printing too. Connect the feeder motor to the shaft of the peristaltic pump (maybe via a reduction gear for more power), adjust e-steps, and instead of a bowden tube, use a silicone tube with a nozzle. In an UMO or UM2 you might be able to use the build-in provisions for the never unused second feeder and nozzle? At least, if the electronics board can handle a second feeder motor (I don't know which UM-models do have driver chips for a second feeder)?

     

    Google "peristaltic pumps" > images. Maybe you could get some inspiration from these areas?

     

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • Help Us Improve Cura – Join the Ultimaker Research Program
        🚀 Help Shape the Future of Cura and Digital Factory – Join Our Power User Research Program!
        We’re looking for active users of Cura and Digital Factory — across professional and educational use cases — to help us improve the next generation of our tools.
        Our Power User Research Program kicks off with a quick 15-minute interview to learn about your setup and workflows. If selected, you’ll be invited into a small group of users who get early access to features and help us shape the future of 3D printing software.

        🧪 What to Expect:
        A short 15-minute kickoff interview to help us get to know you If selected, bi-monthly research sessions (15–30 minutes) where we’ll test features, review workflows, or gather feedback Occasional invites to try out early prototypes or vote on upcoming improvements
        🎁 What You’ll Get:
         
        Selected participants receive a free 1-year Studio or Classroom license Early access to new features and tools A direct voice in what we build next
        👉 Interested? Please fill out this quick form
        Your feedback helps us make Cura Cloud more powerful, more intuitive, and more aligned with how you actually print and manage your workflow.
        Thanks for being part of the community,

        — The Ultimaker Software Team
        • 0 replies
      • Cura 5.10 stable released!
        The full stable release of Cura 5.10 has arrived, and it brings support for the new Ultimaker S8, as well as new materials and profiles for previously supported UltiMaker printers. Additionally, you can now control your models in Cura using a 3D SpaceMouse and more!
          • Like
        • 18 replies
    ×
    ×
    • Create New...